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WATER CONNECTIONS

Install  the  heater  centrally  in  the  building  if  possible  and
make hot water piping runs as short as possible When facing
the heater, the cold water inlet will be on the right and the
hot water outlet on the left..
Although water piping throughout the building may be other
than copper, copper or galvanized piping should be used
when connecting to the heaters ½” male NPT flex connectors
(follow local codes if more stringent). Plastics or other PEX
type plumbing line materials are not suitable for connecting
directly to the water heater.  Keep water inlet pipe to no less
than ½” (19.05mm) diameter to allow the full flow capacity.
If the cold and hot connections to the heater are reversed,
the heater will not function.
The  Aquastar  125B  is  provided  with  one  flexible  type
connector that must be connected to the cold inlet fitting of
the water valve as shown in Fig. 6.  The union end of the
flexible connector should be attached to the rear inlet port
of the water valve with the supplied washer gasket.  No pipe
dope or thread tape is to be used at this joint. The ½” flexible
hot water outlet line is supplied attached to the heater.
Be certain there are no loose particles or dirt in the piping.
Blow out or flush the lines before connecting to the water
heater. Full port valves should be installed on both the cold
water supply and hot water outlet lines to facilitate servicing
the  heater  (see  Fig.  7).  For  installation  on  a  private  well
system with the use of a pressure tank, the lowest pressure
range setting recommended is 30-50 psi (2.07-3.45 bar).

OPERATING INSTRUCTIONS

Before proceeding with the operation of the heater make
sure that the system is filled with water.
Open the cold water inlet supply to the heater fully.
Open a hot water faucet to permit the water to fill the heater
and the piping and to eliminate the air trapped in the system
Close the hot water faucet after the water flows freely and
all the air has escaped from the system. The water heater is
now ready to operate.

FOR YOUR SAFETY READ BEFORE LIGHTING
THE PILOT

Warning

: If you do not follow these instructions

exactly, a fire or explosion may result causing property
damage, personal injury or loss of life.

This appliance has a piezo-igniter for lighting the pilot

burner. When lighting the pilot, follow these instructions
exactly.

BEFORE LIGHTING smell all around the appliance area

for gas. Be sure to smell next to the floor because some gas
is heavier than air and will settle on the floor.
WHAT TO DO IF YOU SMELL GAS
- Do not try to light any appliance.
- Do not touch any electric switch; do not use any phone

in your building

- Immediately call your gas supplier from a neighbor’s

phone. Follow the gas supplier’s instructions.

- If you cannot reach your gas supplier, call the fire

department.

Use only your hand to push in or turn the gas control

buttons. Never use tools. If a button will not push in, check
to make sure the buttons are being pushed in the proper
sequence. Follow these instructions exactly. If control
button(s) are jammed, close the gas supply and call a
qualified service technician. Attempted forceful repair may
result in a fire or explosion.

Do not use this appliance if any part has been under

water. Immediately call a qualified service technician to
inspect the appliance and to replace any part of the control
system and any gas control which has been under water.

Connecting the pressure relief valve (PRV)

A listed pressure relief valve supplied with the heater must
be  installed  at  the  time  of  installation.  No  valve  is  to  be
placed  between  the  PRV  and  the  heater.  No  reducing
coupling or other restriction may be installed in the discharge
line. The discharge line must be installed such that it allows
complete drainage of both the PRV and the line. The location
of  the  PRV  must  be  readily  accessible  for  servicing  or
replacement, and be mounted as close to the water heater
as possible. See Fig 7.
To install the PRV, a suitable fitting connected to an extension
on a “T” fitting can be sweated to the hot water line.

Fig. 7 - Pressure Relief Valve

PIPE PRV TO

APPROPRIATE

DISCHARGE

Fig. 6 - Water valve and water connector, top view